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L:8 tria �a After the wells were purged, the pump was pulled from the well. With the pump out of the well, groundwater samples were collected by lowering a teflon bailer into the well. The bailer was lowered into each well using new, clean monofillament line. This line was not reused between wells. Water collected in the bailer was poured directly from the bailer into two cleaned, kilned 40 milliliter (ml) , amber glass; vials preserved with 2 ml of 1:1 dilute hydrochloric acid and capped with teflon lined septa. The bailer was decontaminated between wells using the same techniques as described for the split.-spoon analytical sampling. The pump was thoroughly cleaned prior to use with a high pressure potable water spray rinse, and was cleaned in the same fashion after each _. well had been purged. In addition to the these water samples, one duplicate water sample (collected at MW-2 and identified as sample number• MW-3.02) "- and one water rinsate blank (collected after the last well had been sampled and labeled NW-203) were collected for quality assurance purposes. No distinction was made to the laboratory between these quality assurance samples and the monitor well groundwater samples. The duplicate sample was a split sample removed from the same bailer of water as the primary sample. n� This procedure served as a check on consistency of laboratory methods. The rinsate blank was collected after the bailer had been routinely decontaminated. Distilled water was poured into the top of the bailer and the sample collected using the same procedures as employed for the samples obtained from the monitor wells. This procedure served as a check on the effectiveness of the field decontamination procedures. All water samples were labeled in the field with an indelible ink d- pen as they were collected. For each sample, the date and time of ,ample collection, the sampler's initials, the project name and the designated analyses were recorded on the label and on the sampling log sheet. Water samples were identified using the monitor well name. Once labeled, the samples were inserted into ziplock baggies and placed on ice in an insulated cooler. All samples were delivered to the laboratory the same day as sampled. All water samples were transported under chain--of-custody to WESTON Analytics' Stockton, CA. laboratory and submitted for chemical analysis by EPA Method 602 (aromatic volatile organics) and total petroleum hydrocarbons per Method 8015 modified for diesel. (All chain--of-custodies are presented in Appendix F.) The development water sample, field duplicate sample and the field rinsate blank were submitted for the same analytic suite. It should be noted the laboratory exceeded the method prescribed --------- -._--------- -----hording_times-by 4-:days--'for Mater-samples collected ori August`19; -- C - 6